2507855 has 16 divisors (see below), whose sum is σ = 3486720. Its totient is φ = 1696032.

The previous prime is 2507837. The next prime is 2507861. The reversal of 2507855 is 5587052.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2507855 - 2¹⁰ = 2506831 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2312 + ... + 3218.

It is an arithmetic number, because the mean of its divisors is an integer number (217920).

2^2507855 is an apocalyptic number.

2507855 is a deficient number, since it is larger than the sum of its proper divisors (978865).

2507855 is an equidigital number, since it uses as much as digits as its factorization.

2507855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998.

The product of its (nonzero) digits is 14000, while the sum is 32.

The square root of 2507855 is about 1583.6208510878. The cubic root of 2507855 is about 135.8628772184.

It can be divided in two parts, 2507 and 855, that multiplied together give a triangular number (2143485 = T₂₀₇₀).

The spelling of 2507855 in words is "two million, five hundred seven thousand, eight hundred fifty-five".